/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&family=Outfit:wght@300;500;700&display=swap');

:root {
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --primary-color: #38bdf8;
    --primary-rgb: 56, 189, 248;
    --secondary-color: #a78bfa;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --accent-glow: rgba(var(--primary-rgb), 0.4);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --gradient-text: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --gradient-bg: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1) 0%, rgba(167, 139, 250, 0.1) 100%);
    
    --transition-fast: 0.3s ease;
    --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, .logo {
    font-family: var(--font-heading);
    color: var(--text-primary);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

/* NAVBAR */
nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 8%;
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background var(--transition-fast), padding var(--transition-fast), box-shadow var(--transition-fast);
}

nav.scrolled {
    padding: 1rem 8%;
    background: rgba(2, 6, 23, 0.95);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

nav.scrolled .logo {
    font-size: 1.35rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

nav ul {
    display: flex;
    gap: 2.5rem;
}

nav a {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 1rem;
    position: relative;
}

nav a:hover, nav a.active {
    color: var(--primary-color);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-text);
    transition: var(--transition-fast);
}

nav a:hover::after {
    width: 100%;
}

/* HERO SECTION */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 8%;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(var(--primary-rgb), 0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero-text {
    max-width: 600px;
}

.hero-text h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1rem;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-text h3 {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero-text p {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
}

.hero-tagline {
    margin-top: 1rem;
    margin-bottom: 2.5rem;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.btn-primary {
    background: var(--gradient-text);
    color: var(--bg-color);
    box-shadow: 0 0 20px rgba(var(--primary-rgb), 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(var(--primary-rgb), 0.5);
}

.btn-secondary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-secondary:hover {
    background: rgba(var(--primary-rgb), 0.1);
    transform: translateY(-3px);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 350px;
    height: 350px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--surface-color);
    box-shadow: 0 0 50px rgba(var(--primary-rgb), 0.2);
    position: relative;
    z-index: 10;
}

/* SECTIONS GRID */
.section {
    padding: 100px 8%;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.section-header span {
    color: var(--primary-color);
}

/* ABOUT */
.about-content {
    max-width: 1100px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
}

.about-card {
    background: var(--surface-color);
    padding: 35px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.about-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.3rem;
}

.about-card p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    text-align: left;
}

.about-card p:last-child {
    margin-bottom: 0;
}

/* SKILLS */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-card {
    background: var(--surface-color);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: var(--transition-fast);
    text-align: center;
}

.skill-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 40px -10px rgba(var(--primary-rgb), 0.2);
}

.skill-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* PROJECTS */
.project-card {
    background: var(--surface-color);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.05);
    margin-bottom: 2rem;
    transition: var(--transition-fast);
}

.project-card:hover {
    border-color: var(--secondary-color);
    transform: scale(1.02);
}

.project-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tags {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 25px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 25px;
    padding: 10px 20px;
    background: var(--gradient-text);
    color: var(--bg-color) !important;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 4px 15px rgba(var(--primary-rgb), 0.2);
    transition: var(--transition-fast);
}

.project-links .project-link {
    margin-top: 0;
}

.project-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(var(--primary-rgb), 0.4);
    filter: brightness(1.1);
}

.project-link i {
    font-size: 1.1rem;
}

/* CONTACT */
.contact-container {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.social-btn {
    width: 50px;
    height: 50px;
    background: var(--surface-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border: 1px solid rgba(255,255,255,0.05);
    transition: var(--transition-fast);
}

.social-btn:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    transform: translateY(-5px);
}

/* FOOTER */
footer {
    padding: 40px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-secondary);
}

/* LOADER */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.8s ease, visibility 0.8s;
}

#loader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-logo {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: block;
    margin-bottom: 20px;
    animation: pulse 1.5s infinite ease-in-out;
}

.loader-bar {
    width: 150px;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.loader-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-text);
    animation: loading 1.5s infinite ease-in-out;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* ANIMATION CLASSES */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform, opacity;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered Delay Utilities */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* RESPONSIVE */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        padding-top: 120px;
        text-align: center;
        gap: 60px;
    }

    .hero-text h1 {
        font-size: 3rem;
    }

    .buttons {
        justify-content: center;
    }
}